How much detail do you keep of what you send in? Do you catalog everything on a spreadsheet before you send in, or do you just keep a rough count? I haven't sent a batch in a while, but have one ready to go -- wondering if I should get a detailed list of everything before I do.

I make a spreadsheet of everything (name/brand/card#, serial #, listing cost, etc) I keep one for me and send them one. There are still sometimes errors but at least you have the back up of what you sent in so you can get it in the corrections queue.